Physostigma venenosum — Calabar Cal a*bar, n. A district on the west coast of Africa. [1913 Webster] {Calabar bean}, The of a climbing legumious plant ({Physostigma venenosum}), a native of tropical Africa. It is highly poisonous. It is used to produce contraction of… … The Collaborative International Dictionary of English

Physostigma venenosum — Eserine Es er*ine (?; 104), n. [From native name of the Calabar bean: cf. F. [ e]s[ e]rine.] (Chem.) An alkaloid found in the Calabar bean, and the seed of {Physostigma venenosum}; physostigmine. It is used in ophthalmic surgery for its effect in … The Collaborative International Dictionary of English